In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a narrowband Internet of thing (NB-IoT) user equipment (UE). Further, the apparatus may be configured to receive NB reference signals (NRS) on a NB channel during a gap between reception events, perform link quality measurements based on the NRS received during an evaluation time interval, the evaluation time interval being shorter than the gap between the reception events, determine whether a link quality is greater than or equal to a first threshold, during the evaluation time interval, based on the link quality measurements, and determine whether to enable an autonomous reception (RX) sleep mode for a remaining duration of the gap between the reception events based at least in part on determining whether the link quality is greater than or equal to the first threshold value.
Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method of wireless communications, by a narrowband Internet of thing (NB-IoT) user equipment (UE), comprising: receiving NB reference signals (NRS) on a NB channel during a gap between reception events; performing link quality measurements based on the NRS received during an evaluation time interval, the evaluation time interval being shorter than the gap between the reception events; determining whether a link quality is greater than or equal to a first threshold, during the evaluation time interval, based on the link quality measurements; and determining whether to enable an autonomous reception (RX) sleep mode for a remaining duration of the gap between the reception events based at least in part on determining whether the link quality is greater than or equal to the first threshold value.
The invention relates to wireless communications for narrowband Internet of Things (NB-IoT) user equipment (UE), addressing the challenge of optimizing power consumption while maintaining reliable connectivity. The method involves receiving narrowband reference signals (NRS) on a narrowband channel during gaps between reception events. The UE performs link quality measurements based on the NRS within an evaluation time interval that is shorter than the gap duration. During this interval, the UE assesses whether the link quality meets or exceeds a predefined threshold. Based on this determination, the UE decides whether to enable an autonomous reception (RX) sleep mode for the remaining portion of the gap. This approach allows the UE to conserve power by entering sleep mode when link quality is sufficient, while remaining active when necessary to maintain communication reliability. The method ensures efficient energy usage without compromising performance, particularly in scenarios where the UE operates intermittently.
2. The method of claim 1 , further comprising: enabling the autonomous RX sleep mode for the remaining duration of the gap between the reception events based on determining that the link quality is greater than or equal to the first threshold value.
This invention relates to wireless communication systems, specifically methods for managing power consumption in autonomous receivers (RX) during communication gaps. The problem addressed is inefficient power usage in wireless devices, particularly during idle periods between reception events, where the receiver may remain active unnecessarily, draining battery life. The method involves monitoring link quality between a transmitter and receiver during communication. If the link quality meets or exceeds a predefined threshold, the receiver enters an autonomous sleep mode for the remaining duration of the gap between reception events. This sleep mode conserves power by reducing or suspending receiver operations while maintaining readiness to resume communication when the next reception event occurs. The method ensures reliable communication by only activating sleep mode when link quality is sufficient, preventing data loss or disruptions. The invention also includes determining the duration of the gap between reception events and adjusting the sleep mode accordingly. If link quality falls below the threshold, the receiver remains active to maintain communication integrity. The approach optimizes power efficiency without compromising performance, making it suitable for battery-powered devices in wireless networks.
3. The method of claim 1 , further comprising determining whether an out-of-sync timer has been started during the evaluation time interval, and wherein determining whether to enable the autonomous RX sleep mode further comprises: enabling the autonomous RX sleep mode for the remaining duration of the gap between the reception events based on determining that the link quality is greater than or equal to the first threshold value and based on determining that the out-of-sync timer has not been started; or prohibiting enablement of the autonomous RX sleep mode based on determining that at least one of the link quality is less than to the first threshold value or based on determining that the out-of-sync timer has been started.
This invention relates to wireless communication systems, specifically methods for managing receiver (RX) sleep modes to conserve power while maintaining link reliability. The problem addressed is balancing power efficiency with communication reliability, particularly in scenarios where link quality fluctuates or synchronization issues arise. The method involves evaluating link quality during an evaluation time interval to determine whether to enable an autonomous RX sleep mode. If the link quality meets or exceeds a predefined threshold and no out-of-sync timer has been activated, the autonomous RX sleep mode is enabled for the remaining duration of the gap between reception events. This allows the receiver to enter a low-power state without risking data loss. Conversely, if the link quality falls below the threshold or an out-of-sync timer has been started, the autonomous RX sleep mode is prohibited to ensure continuous communication. The out-of-sync timer indicates potential synchronization issues, prompting the receiver to remain active to avoid missing critical data. This approach dynamically adjusts power-saving measures based on real-time link conditions and synchronization status, optimizing energy efficiency while maintaining reliable communication.
4. The method of claim 1 , wherein the NB-IoT UE is operating in a Radio Resource Control (RRC) connected mode.
A system and method for optimizing network communication in a narrowband Internet of Things (NB-IoT) environment addresses the challenge of inefficient resource utilization and power consumption in low-bandwidth IoT devices. The invention focuses on improving data transmission efficiency for NB-IoT user equipment (UE) operating in a Radio Resource Control (RRC) connected mode, where the device maintains an active connection with the network. In this mode, the UE periodically exchanges control and data signals with the network to maintain synchronization and reduce latency. The method involves dynamically adjusting transmission parameters, such as modulation schemes, coding rates, and resource allocation, based on real-time network conditions and device requirements. This adaptive approach ensures that the UE conserves power while maintaining reliable communication. Additionally, the system may incorporate predictive algorithms to anticipate traffic patterns and pre-allocate resources, further enhancing efficiency. The invention is particularly useful in scenarios where NB-IoT devices are deployed in large-scale networks, such as smart cities or industrial automation, where minimizing power consumption and optimizing bandwidth usage are critical. By dynamically managing the RRC connected mode, the system reduces unnecessary signaling overhead and extends the operational lifespan of battery-powered IoT devices.
5. The method of claim 1 , wherein the gap between the reception events comprises: a time between UE specific search spaces; a time between reception of narrowband physical downlink control channel (NPDCCH) and reception of a narrowband physical downlink shared channel (NPDSCH); a time between reception of NPDSCH and a UE specific search space; a time between reception of system information (SI) scheduling; or any combination thereof.
This invention relates to wireless communication systems, specifically methods for managing reception events in narrowband communication systems such as those used in Internet of Things (IoT) devices. The problem addressed is optimizing the timing and scheduling of reception events to improve power efficiency and reduce latency in narrowband communication, particularly for user equipment (UE) devices operating in low-power modes. The method involves controlling the timing gaps between different reception events to ensure efficient resource utilization and minimize unnecessary power consumption. These gaps include the time between UE-specific search spaces, the time between receiving a narrowband physical downlink control channel (NPDCCH) and a narrowband physical downlink shared channel (NPDSCH), the time between receiving NPDSCH and a UE-specific search space, and the time between system information (SI) scheduling events. The method may also involve combinations of these timing intervals to optimize communication efficiency. By dynamically adjusting these gaps, the invention ensures that the UE can efficiently monitor control channels, receive data, and process system information without excessive power consumption or delays. This is particularly important for IoT devices that rely on narrowband communication for long battery life and reliable connectivity. The method helps balance the trade-off between power efficiency and communication performance in constrained narrowband environments.
6. The method of claim 1 , wherein the link quality measurements comprises a block error rate (BLER) for a maximum number of repetition cycles (Rmax) divided by a whole number into which Rmax can be evenly divided.
This invention relates to wireless communication systems, specifically improving link quality assessment in scenarios with repeated transmissions. The problem addressed is accurately measuring link quality when transmissions are repeated multiple times to enhance reliability, particularly in challenging environments like low-power or high-interference conditions. Traditional methods may not account for the impact of repetition cycles on error rates, leading to suboptimal performance. The invention provides a method for evaluating link quality by calculating a block error rate (BLER) over a subset of repetition cycles. The maximum number of repetition cycles (Rmax) is divided into equal parts, and the BLER is determined for each segment. This segmented approach allows for more precise assessment of link quality, as it captures variations in error rates across different phases of the transmission process. By analyzing BLER over these divided intervals, the system can better adapt to changing channel conditions or interference patterns, improving overall communication reliability. The method is particularly useful in applications where transmissions are repeated to ensure data integrity, such as in IoT devices, machine-type communications, or other scenarios with constrained resources. The segmented BLER measurement enables more dynamic adjustments to transmission parameters, such as modulation schemes or power levels, based on real-time link quality feedback. This approach enhances efficiency and reliability in wireless networks by providing a more granular understanding of link performance during repeated transmissions.
7. The method of claim 6 , wherein the whole number is 4.
A system and method for processing numerical data involves generating a sequence of whole numbers and performing operations on those numbers to achieve a specific computational result. The method includes selecting a whole number from a predefined set, where the whole number is used as a parameter in a mathematical or logical operation. In this specific implementation, the whole number is fixed at 4, which serves as a constant value in the computational process. The method may involve using this number in arithmetic calculations, indexing operations, or as a threshold value in decision-making logic. The system may apply this number in various computational tasks, such as data sorting, filtering, or transformation, where the fixed value of 4 ensures consistency in the output. The method may be part of a larger algorithm or software application designed to process numerical inputs and produce deterministic results based on the predefined whole number. The use of a fixed whole number simplifies the implementation and ensures reproducibility of the computational steps.
8. The method of claim 3 , wherein when the autonomous RX sleep mode is prohibited during the evaluation time interval, the method further comprising: performing subsequent link quality measurements based on the NRS received during a subsequent evaluation time interval; determining that the link quality is greater than or equal to the first threshold, during the subsequent evaluation time interval, based on the subsequent link quality measurements; determining that the out-of-sync timer has not been started; and enabling the autonomous RX sleep mode for the remaining duration of the gap between the reception events.
This invention relates to wireless communication systems, specifically methods for managing autonomous receiver (RX) sleep mode in user equipment (UE) to conserve power while maintaining link quality. The problem addressed is ensuring reliable communication while allowing the UE to enter low-power states during gaps between reception events, particularly when certain conditions prohibit autonomous RX sleep mode during an initial evaluation period. The method involves monitoring link quality based on received network reference signals (NRS) during an evaluation time interval. If autonomous RX sleep mode is prohibited during this interval, the UE performs subsequent link quality measurements during a later evaluation period. If the link quality meets or exceeds a predefined threshold and an out-of-sync timer has not been activated, the UE enables autonomous RX sleep mode for the remaining duration of the gap between reception events. This ensures power savings while maintaining communication reliability by dynamically assessing link conditions before entering sleep mode. The approach prevents premature sleep mode activation when signal quality is insufficient, thereby avoiding potential data loss or synchronization issues.
9. An apparatus for communicating, by a narrowband Internet of thing (NB-IoT) user equipment (UE), in a wireless network, comprising: a transceiver; at least one processor communicatively coupled with the transceiver via a bus for communicating in the wireless network; and a memory communicatively coupled with the at least one processor and/or the transceiver via the bus; wherein the at least one processor or the memory are operable to: receive, via the transceiver, NB reference signals (NRS) on a NB channel during a gap between reception events; perform link quality measurements based on the NRS received during an evaluation time interval, the evaluation time interval being shorter than the gap between the reception events; determine whether a link quality is greater than or equal to a first threshold, during the evaluation time interval, based on the link quality measurements; and determine whether to enable an autonomous reception (RX) sleep mode for a remaining duration of the gap between the reception events based at least in part on determining whether the link quality is greater than or equal to the first threshold value.
The invention relates to narrowband Internet of Things (NB-IoT) user equipment (UE) in wireless networks, addressing the challenge of optimizing power consumption while maintaining reliable communication. The apparatus includes a transceiver, at least one processor, and a memory, all interconnected via a bus. The processor or memory is configured to receive NB reference signals (NRS) on a narrowband channel during gaps between reception events. Link quality measurements are performed based on the NRS within an evaluation time interval that is shorter than the gap duration. The processor determines whether the link quality meets or exceeds a predefined threshold during this interval. If the threshold is met, the UE may enable an autonomous reception (RX) sleep mode for the remaining gap duration, conserving power without compromising communication reliability. This approach allows the UE to dynamically adjust its power consumption based on real-time link quality assessments, improving energy efficiency in NB-IoT networks. The solution is particularly useful for battery-powered IoT devices that require long operational lifetimes while maintaining connectivity.
10. The apparatus of claim 9 , wherein the at least one processor is further operable to: enable the autonomous RX sleep mode for the remaining duration of the gap between the reception events based on determining that the link quality is greater than or equal to the first threshold value.
This invention relates to wireless communication systems, specifically to power-saving techniques for autonomous receivers. The problem addressed is the inefficient use of power in wireless devices during idle periods between reception events, where the receiver remains active unnecessarily, draining battery life. The apparatus includes a wireless communication device with at least one processor configured to monitor link quality between the device and a transmitter. The processor determines whether the link quality meets or exceeds a first threshold value, which indicates a stable communication link. If the link quality is sufficient, the processor enables an autonomous receive (RX) sleep mode for the remaining duration of the gap between reception events. This sleep mode conserves power by deactivating the receiver during periods when no data is expected, while ensuring the device remains ready to receive data when needed. The processor may also adjust the sleep mode duration based on additional factors, such as the type of communication protocol or the expected timing of the next reception event. The invention improves energy efficiency in wireless devices without compromising communication reliability.
11. The apparatus of claim 9 , wherein the at least one processor is further operable to determine whether an out-of-sync timer has been started during the evaluation time interval, and wherein the determination of whether to enable the autonomous RX sleep mode further comprises: enabling the autonomous RX sleep mode for the remaining duration of the gap between the reception events based on determining that the link quality is greater than or equal to the first threshold value and based on determining that the out-of-sync timer has not been started; or prohibiting enablement of the autonomous RX sleep mode based on determining that at least one of the link quality is less than to the first threshold value or based on determining that the out-of-sync timer has been started.
This invention relates to wireless communication systems, specifically to a method for managing receiver (RX) sleep modes in devices to conserve power while maintaining communication reliability. The problem addressed is balancing power efficiency with link stability, particularly in scenarios where devices may experience intermittent signal quality or synchronization issues. The apparatus includes at least one processor configured to evaluate link quality during a defined evaluation time interval between reception events. If the link quality meets or exceeds a first threshold value, the processor may enable an autonomous RX sleep mode for the remaining duration of the gap between reception events, provided an out-of-sync timer has not been started. This sleep mode allows the receiver to power down temporarily, reducing energy consumption. However, if the link quality falls below the threshold or the out-of-sync timer has been triggered, the processor prohibits the sleep mode to prevent data loss or synchronization errors. The out-of-sync timer may be initiated if the device detects synchronization issues, such as frame misalignment or excessive errors. The apparatus ensures reliable communication by dynamically adjusting sleep mode activation based on real-time link conditions and synchronization status.
12. The apparatus of claim 9 , wherein the NB-IoT UE is operating in a Radio Resource Control (RRC) connected mode.
This invention relates to apparatuses for managing communication in a narrowband Internet of Things (NB-IoT) network, specifically addressing power efficiency and resource allocation in connected mode operation. The apparatus includes an NB-IoT user equipment (UE) configured to operate in a Radio Resource Control (RRC) connected mode, where the UE maintains an active connection with the network for continuous data exchange. The apparatus further includes a base station that dynamically allocates radio resources to the UE based on its communication requirements, optimizing power consumption and network efficiency. The base station monitors the UE's activity and adjusts resource allocation to minimize idle periods, reducing unnecessary power usage while ensuring reliable data transmission. Additionally, the apparatus may incorporate mechanisms for handling discontinuous reception (DRX) cycles, allowing the UE to periodically enter low-power states without losing connectivity. The invention aims to enhance battery life for IoT devices while maintaining seamless communication in connected mode, addressing challenges in power management and resource efficiency in NB-IoT networks.
13. The apparatus of claim 9 , wherein the gap between the reception events comprises: a time between UE specific search spaces; a time between reception of narrowband physical downlink control channel (NPDCCH) and reception of a narrowband physical downlink shared channel (NPDSCH); a time between reception of NPDSCH and a UE specific search space; a time between reception of system information (SI) scheduling; or any combination thereof.
This invention relates to wireless communication systems, specifically to apparatuses and methods for managing reception events in narrowband communication systems, such as those used in Internet of Things (IoT) devices. The problem addressed is the efficient scheduling and reception of control and data channels in narrowband systems to optimize power consumption and resource utilization. The apparatus includes a receiver configured to monitor multiple narrowband channels, including a narrowband physical downlink control channel (NPDCCH) and a narrowband physical downlink shared channel (NPDSCH). The apparatus also includes a processor that determines gaps between reception events to improve synchronization and reduce unnecessary power consumption. These gaps may occur between UE-specific search spaces, between NPDCCH and NPDSCH receptions, between NPDSCH and UE-specific search spaces, or between system information (SI) scheduling events. The processor adjusts these gaps dynamically based on network conditions and device requirements to ensure efficient communication while minimizing energy usage. The invention also includes a transmitter for sending acknowledgments or other feedback to the network, ensuring reliable communication. The apparatus may further include a memory for storing configuration parameters and timing information. By optimizing these gaps, the invention enhances the efficiency of narrowband communication systems, particularly for low-power devices operating in constrained environments.
14. The apparatus of claim 9 , wherein the link quality measurements comprises a block error rate (BLER) for a maximum number of repetition cycles (Rmax) divided by a whole number into which Rmax can be evenly divided.
This invention relates to wireless communication systems, specifically improving link quality measurements in scenarios with repetitive transmissions. The problem addressed is accurately assessing link quality when transmissions are repeated multiple times to enhance reliability, particularly in low-power or high-interference environments. Traditional methods may not account for the impact of repetition cycles on error rates, leading to inaccurate performance evaluations. The apparatus includes a receiver configured to measure link quality by determining a block error rate (BLER) for a maximum number of repetition cycles (Rmax). The BLER is calculated by dividing Rmax into a whole number that evenly divides it, ensuring consistent and meaningful error rate measurements. This approach allows for precise assessment of transmission reliability, even when multiple repetitions are used. The apparatus may also include a transmitter for sending signals and a processor for analyzing the received signals to compute the BLER. The system can be applied in various wireless communication protocols, such as narrowband IoT (NB-IoT) or other low-power wide-area networks (LPWANs), where repetitive transmissions are common. By normalizing the BLER measurement across evenly divisible segments of Rmax, the invention provides a more accurate and reliable metric for evaluating link performance in repetitive transmission scenarios.
15. The apparatus of claim 14 , wherein the whole number is 4.
A system for processing numerical data includes a computing device configured to receive an input value and determine whether the input value is a whole number. The system further includes a validation module that checks if the whole number meets a predefined condition. If the condition is satisfied, the system performs a specific operation, such as generating an output or triggering an action. In one embodiment, the predefined condition is that the whole number must be equal to 4. The system may be used in applications requiring strict numerical validation, such as financial transactions, inventory management, or automated decision-making processes. The validation module ensures that only valid inputs proceed to further processing, enhancing accuracy and reliability in numerical operations. The system may also include error handling mechanisms to manage invalid inputs, such as prompting for re-entry or logging the error for review. The apparatus is designed to operate in real-time or batch processing environments, depending on the application requirements.
16. The apparatus of claim 11 , wherein when the autonomous RX sleep mode is prohibited during the evaluation time interval, and wherein the at least one processor is further operable to: perform subsequent link quality measurements based on the NRS received during a subsequent evaluation time interval; determine that the link quality is greater than or equal to the first threshold, during the subsequent evaluation time interval, based on the subsequent link quality measurements; determine that the out-of-sync timer has not been started; and enable the autonomous RX sleep mode for the remaining duration of the gap between the reception events.
This invention relates to wireless communication systems, specifically to managing receiver (RX) sleep modes in autonomous devices to conserve power while maintaining link quality. The problem addressed is ensuring reliable communication while allowing devices to enter low-power sleep states without unnecessary disruptions. The apparatus includes a processor that monitors link quality using a narrowband reference signal (NRS) during an evaluation time interval. If the autonomous RX sleep mode is prohibited during this interval, the processor performs additional link quality measurements in a subsequent evaluation time interval. If the link quality meets or exceeds a predefined threshold and an out-of-sync timer has not been activated, the processor enables the autonomous RX sleep mode for the remaining duration of the gap between reception events. This ensures the device can enter a low-power state only when communication reliability is confirmed, preventing unnecessary wake-ups and conserving energy. The system dynamically adjusts sleep mode activation based on real-time link quality assessments, avoiding premature sleep mode entry that could lead to missed transmissions. The out-of-sync timer check ensures synchronization is maintained, further enhancing reliability. This approach optimizes power efficiency while maintaining communication integrity in autonomous wireless devices.
17. An apparatus for wireless communications, by a narrowband Internet of thing (NB-IoT) user equipment (UE), comprising: means for receiving NB reference signals (NRS) on a NB channel during a gap between reception events; means for performing link quality measurements based on the NRS received during an evaluation time interval, the evaluation time interval being shorter than the gap between the reception events; means for determining whether a link quality is greater than or equal to a first threshold, during the evaluation time interval, based on the link quality measurements; and means for determining whether to enable an autonomous reception (RX) sleep mode for a remaining duration of the gap between the reception events based at least in part on determining whether the link quality is greater than or equal to the first threshold value.
This invention relates to wireless communication systems, specifically for narrowband Internet of Things (NB-IoT) user equipment (UE). The problem addressed is optimizing power consumption in NB-IoT devices by intelligently managing reception sleep modes during idle periods between communication events. NB-IoT devices often operate on battery power and require efficient energy management to extend operational lifespan. The apparatus includes a receiver configured to obtain narrowband reference signals (NRS) on a narrowband channel during gaps between reception events. A measurement module performs link quality assessments based on the received NRS within an evaluation time interval that is shorter than the gap duration. A decision module determines whether the measured link quality meets or exceeds a predefined threshold during this interval. If the threshold is met, the apparatus may enable an autonomous reception (RX) sleep mode for the remaining portion of the gap, conserving power by reducing unnecessary reception activity. If the threshold is not met, the apparatus may remain active to ensure reliable communication. This approach balances power efficiency with communication reliability by dynamically adjusting reception states based on real-time link quality assessments.
18. The apparatus of claim 17 , further comprising: means for enabling the autonomous RX sleep mode for the remaining duration of the gap between the reception events based on determining that the link quality is greater than or equal to the first threshold value.
This invention relates to wireless communication systems, specifically to methods for managing power consumption in autonomous receivers (RX) during communication gaps. The problem addressed is inefficient power usage in wireless devices, particularly during periods between reception events, where the receiver may remain active unnecessarily, draining battery life. The apparatus includes a receiver configured to operate in an autonomous sleep mode during gaps between reception events. The sleep mode is triggered based on link quality assessments. The apparatus monitors the link quality between the receiver and a transmitter and compares it to a predefined threshold value. If the link quality meets or exceeds this threshold, the receiver enters a low-power sleep mode for the remaining duration of the gap, conserving energy. If the link quality falls below the threshold, the receiver remains active to ensure reliable communication. The apparatus may also include means for adjusting the sleep mode duration dynamically based on varying link quality conditions. This ensures that the receiver only sleeps when communication reliability is not compromised. The invention optimizes power efficiency without sacrificing performance, making it suitable for battery-powered devices in wireless networks.
19. The apparatus of claim 17 , further comprising means for determining whether an out-of-sync timer has been started during the evaluation time interval, and wherein the means for determining whether to enable the autonomous RX sleep mode further comprises: means for enabling the autonomous RX sleep mode for the remaining duration of the gap between the reception events based on determining that the link quality is greater than or equal to the first threshold value and based on determining that the out-of-sync timer has not been started; or means for prohibiting enablement of the autonomous RX sleep mode based on determining that at least one of the link quality is less than to the first threshold value or based on determining that the out-of-sync timer has been started.
This invention relates to wireless communication systems, specifically to a method for managing receiver (RX) sleep modes in devices to conserve power while maintaining communication reliability. The problem addressed is optimizing power efficiency by enabling autonomous RX sleep modes during gaps between reception events, while ensuring that the device remains synchronized with the network and maintains acceptable link quality. The apparatus includes a mechanism to evaluate link quality during an evaluation time interval and compare it to a first threshold value. If the link quality meets or exceeds this threshold, the device may enter an autonomous RX sleep mode for the remaining duration of the gap between reception events, provided an out-of-sync timer has not been started. This ensures the device remains synchronized with the network. If the link quality falls below the threshold or the out-of-sync timer has been triggered, the autonomous RX sleep mode is prohibited to prevent synchronization loss or communication errors. The out-of-sync timer is a safeguard mechanism that indicates potential synchronization issues, prompting the device to stay active to maintain reliable communication. This approach balances power savings with communication reliability by dynamically adjusting sleep mode behavior based on real-time link conditions and synchronization status.
20. The apparatus of claim 17 , wherein the NB-IoT UE is operating in a Radio Resource Control (RRC) connected mode.
This invention relates to wireless communication systems, specifically to apparatuses for managing Non-Broadband Internet of Things (NB-IoT) user equipment (UE) in cellular networks. The problem addressed is optimizing resource utilization and power efficiency for NB-IoT devices, which are designed for low-power, wide-area connectivity but often face challenges in maintaining efficient communication states. The apparatus includes an NB-IoT UE configured to operate in a Radio Resource Control (RRC) connected mode, where it maintains an active connection with the network for continuous data exchange. The UE is equipped with a processor and memory storing instructions for managing communication sessions, including transitioning between idle and connected states based on traffic demands. The apparatus also includes a base station with components for handling NB-IoT signaling, such as a scheduler for allocating resources and a controller for managing UE connections. The base station monitors the UE's activity to determine when to keep it in the connected mode or transition it to idle mode to conserve power. The invention further involves mechanisms for reducing signaling overhead by minimizing unnecessary state transitions, improving battery life for IoT devices while maintaining reliable connectivity. The apparatus may also include features for handling small data transmissions efficiently, ensuring low-latency communication for time-sensitive applications. The overall system aims to balance network efficiency and device power consumption, particularly for NB-IoT UEs that operate in constrained environments.
21. The apparatus of claim 17 , wherein the gap between the reception events comprises: a time between UE specific search spaces; a time between reception of narrowband physical downlink control channel (NPDCCH) and reception of a narrowband physical downlink shared channel (NPDSCH); a time between reception of NPDSCH and a UE specific search space; a time between reception of system information (SI) scheduling; or any combination thereof.
This invention relates to wireless communication systems, specifically to apparatuses and methods for managing reception events in narrowband communication systems, such as those used in low-power, wide-area networks like NB-IoT (Narrowband Internet of Things). The problem addressed is the efficient scheduling and timing of reception events to optimize power consumption, resource utilization, and synchronization in user equipment (UE) devices operating in narrowband environments. The apparatus includes a receiver configured to detect and process various downlink signals, such as narrowband physical downlink control channel (NPDCCH) and narrowband physical downlink shared channel (NPDSCH) transmissions. The invention focuses on defining specific time gaps between these reception events to improve system performance. These gaps may include the time between UE-specific search spaces, the interval between NPDCCH and NPDSCH receptions, the delay between NPDSCH reception and the next UE-specific search space, or the timing associated with system information (SI) scheduling. By precisely controlling these intervals, the apparatus ensures proper synchronization, reduces unnecessary power consumption, and enhances data transmission efficiency in narrowband communication systems. The invention may also involve combinations of these timing parameters to adapt to different operational scenarios and network configurations.
22. The apparatus of claim 17 , wherein the link quality measurements comprises a block error rate (BLER) for a maximum number of repetition cycles (Rmax) divided by a whole number into which Rmax can be evenly divided.
This invention relates to wireless communication systems, specifically improving link quality measurements in scenarios with repetitive transmissions. The problem addressed is accurately assessing link quality when transmissions are repeated multiple times to enhance reliability, particularly in challenging environments like low-power or high-interference conditions. The apparatus includes a receiver configured to measure link quality by evaluating block error rates (BLER) across repeated transmissions. The key innovation involves dividing the maximum number of repetition cycles (Rmax) into equal segments and calculating a BLER for each segment. This segmented approach provides finer granularity in link quality assessment compared to evaluating the entire Rmax block as a single unit. The apparatus may also include a transmitter for sending control signals and a processor to analyze the segmented BLER measurements to optimize transmission parameters dynamically. The segmented BLER measurement technique allows for more precise adjustments to transmission power, modulation schemes, or repetition cycles based on real-time channel conditions. This improves efficiency by avoiding unnecessary repetitions when link quality is sufficient or increasing repetitions when errors are detected in specific segments. The invention is particularly useful in machine-type communications (MTC) or narrowband IoT (NB-IoT) where devices operate under strict power and bandwidth constraints.
23. The apparatus of claim 22 , wherein the whole number is 4.
The invention relates to a computational apparatus designed to process numerical data, specifically focusing on operations involving whole numbers. The apparatus includes a processing unit configured to perform arithmetic operations on whole numbers, with a particular emphasis on the number 4. The processing unit is capable of executing calculations such as addition, subtraction, multiplication, and division involving the whole number 4, either as an operand or as part of a mathematical expression. The apparatus may also include memory storage for retaining intermediate or final results of these operations. Additionally, the apparatus may incorporate input and output interfaces to facilitate data exchange with external systems or users. The design ensures efficient and accurate handling of numerical computations, particularly those involving the whole number 4, to enhance performance in applications requiring precise arithmetic operations. The apparatus may be integrated into larger computing systems or standalone devices where numerical processing is critical.
24. The apparatus of claim 19 , wherein when the autonomous RX sleep mode is prohibited during the evaluation time interval, the apparatus further comprises: means for performing subsequent link quality measurements based on the NRS received during a subsequent evaluation time interval; means for determining that the link quality is greater than or equal to the first threshold, during the subsequent evaluation time interval, based on the subsequent link quality measurements; means for determining that the out-of-sync timer has not been started; and means for enabling the autonomous RX sleep mode for the remaining duration of the gap between the reception events.
This invention relates to wireless communication systems, specifically managing autonomous receive (RX) sleep modes in user equipment (UE) to conserve power while maintaining link quality. The problem addressed is ensuring reliable communication while allowing the UE to enter low-power states during gaps between reception events, without compromising synchronization or data integrity. The apparatus includes a receiver configured to measure link quality using a New Radio Synchronization Signal (NRS) during an evaluation time interval. If autonomous RX sleep mode is prohibited during this interval, the apparatus performs additional link quality measurements during a subsequent evaluation time interval. If the measured link quality meets or exceeds a predefined threshold and an out-of-sync timer has not been activated, the apparatus enables autonomous RX sleep mode for the remaining duration of the gap between reception events. This ensures the UE can enter a low-power state only when conditions are favorable, preventing synchronization loss or data errors. The solution dynamically adjusts power-saving behavior based on real-time link quality assessments, optimizing energy efficiency without sacrificing performance.
25. A non-transitory computer-readable storage medium comprising computer-executable code for communicating in a wireless network, the code comprising: code for receiving NB reference signals (NRS) on a NB channel during a gap between reception events; code for performing link quality measurements based on the NRS received during an evaluation time interval, the evaluation time interval being shorter than the gap between the reception events; code for determining whether a link quality is greater than or equal to a first threshold, during the evaluation time interval, based on the link quality measurements; and code for determining whether to enable an autonomous reception (RX) sleep mode for a remaining duration of the gap between the reception events based at least in part on determining whether the link quality is greater than or equal to the first threshold value.
This invention relates to wireless communication systems, specifically methods for optimizing power consumption in devices by implementing an autonomous reception (RX) sleep mode. The problem addressed is the inefficient use of power in wireless devices during idle periods, where continuous reception of reference signals consumes unnecessary energy. The solution involves a system that dynamically adjusts reception activity based on link quality measurements. The system operates by receiving narrowband (NB) reference signals (NRS) on a narrowband channel during gaps between scheduled reception events. During an evaluation time interval, which is shorter than the gap duration, the system performs link quality measurements using the received NRS. If the measured link quality meets or exceeds a predefined threshold, the system determines whether to enable an autonomous RX sleep mode for the remaining portion of the gap. This allows the device to conserve power by entering a low-power state when signal conditions are favorable, reducing unnecessary reception activity. The decision to enter sleep mode is based on the link quality assessment, ensuring reliable communication while minimizing energy consumption. This approach is particularly useful in low-power wireless applications where energy efficiency is critical.
26. The non-transitory computer-readable storage medium of claim 25 , wherein the code further comprises: code for enabling the autonomous RX sleep mode for the remaining duration of the gap between the reception events based on determining that the link quality is greater than or equal to the first threshold value.
This invention relates to wireless communication systems, specifically to techniques for managing power consumption in autonomous receivers. The problem addressed is the inefficient use of power in wireless devices during idle periods between reception events, where the receiver remains active unnecessarily, draining battery life. The invention describes a method for enabling an autonomous receive (RX) sleep mode in a wireless device during gaps between reception events. The system monitors link quality metrics, such as signal strength or error rates, and compares them to predefined threshold values. If the link quality meets or exceeds a first threshold, the device enters a low-power sleep mode for the remaining duration of the gap, conserving energy. If the link quality falls below the threshold, the device remains active to ensure reliable communication. The system may also adjust the sleep mode duration or thresholds dynamically based on network conditions or device requirements. This approach balances power efficiency with communication reliability, extending battery life in wireless devices without compromising performance. The invention is particularly useful in IoT devices, sensors, and other battery-powered wireless systems where energy efficiency is critical.
27. The non-transitory computer-readable storage medium of claim 25 , wherein the code further comprises determining whether an out-of-sync timer has been started during the evaluation time interval, and wherein the code for determining whether to enable the autonomous RX sleep mode further comprises: code for enabling the autonomous RX sleep mode for the remaining duration of the gap between the reception events based on determining that the link quality is greater than or equal to the first threshold value and based on determining that the out-of-sync timer has not been started; or code for prohibiting enablement of the autonomous RX sleep mode based on determining that at least one of the link quality is less than to the first threshold value or based on determining that the out-of-sync timer has been started.
This invention relates to wireless communication systems, specifically to a method for managing autonomous receiver (RX) sleep mode in a device to conserve power while maintaining communication reliability. The problem addressed is the need to balance power efficiency with link stability, particularly in scenarios where communication gaps occur between reception events. The invention involves a non-transitory computer-readable storage medium containing code that evaluates link quality and an out-of-sync timer to determine whether to enable an autonomous RX sleep mode during these gaps. The code first assesses whether the link quality meets or exceeds a predefined threshold value. If the link quality is sufficient, the code then checks whether an out-of-sync timer has been initiated during the evaluation time interval. If the timer has not started, the autonomous RX sleep mode is enabled for the remaining duration of the gap, allowing the device to conserve power. However, if either the link quality is insufficient or the out-of-sync timer has been started, the autonomous RX sleep mode is prohibited to ensure reliable communication. This approach ensures that the device only enters sleep mode when conditions are favorable, preventing disruptions while optimizing power usage.
28. The non-transitory computer-readable storage medium of claim 25 , further comprises code for operating in a Radio Resource Control (RRC) connected mode.
A system and method for wireless communication involves a non-transitory computer-readable storage medium containing executable code for managing radio resource control (RRC) connections in a wireless network. The system operates in an RRC connected mode, where a user device maintains an active connection with a network base station, enabling real-time data exchange and efficient resource allocation. The RRC connected mode allows the device to receive and transmit data with low latency, supports mobility management, and enables the network to dynamically adjust transmission parameters based on channel conditions. The system may also include code for transitioning between RRC connected and idle modes, optimizing power consumption and network resources. The invention addresses challenges in maintaining reliable, low-latency communication while efficiently managing network resources in wireless networks, particularly in scenarios requiring continuous data exchange, such as video streaming, real-time applications, or high-mobility environments. The solution enhances user experience by reducing connection delays and improving data throughput while minimizing unnecessary signaling overhead.
29. The non-transitory computer-readable storage medium of claim 25 , wherein the gap between the reception events comprises: a time between UE specific search spaces; a time between reception of narrowband physical downlink control channel (NPDCCH) and reception of a narrowband physical downlink shared channel (NPDSCH); a time between reception of NPDSCH and a UE specific search space; a time between reception of system information (SI) scheduling; or any combination thereof.
This invention relates to wireless communication systems, specifically to managing reception events in narrowband communication protocols, such as those used in low-power, wide-area networks like NB-IoT (Narrowband Internet of Things). The problem addressed is optimizing the timing and scheduling of reception events to improve power efficiency and reduce latency in user equipment (UE) devices, which are often battery-powered and resource-constrained. The invention describes a non-transitory computer-readable storage medium containing instructions for controlling a UE to manage gaps between reception events. These gaps may occur between UE-specific search spaces, between the reception of a narrowband physical downlink control channel (NPDCCH) and a narrowband physical downlink shared channel (NPDSCH), between NPDSCH reception and a UE-specific search space, or between system information (SI) scheduling events. The timing of these gaps is critical for ensuring efficient power usage and minimizing unnecessary wake-up periods for the UE. By precisely controlling these intervals, the UE can avoid unnecessary energy consumption while maintaining reliable communication with the network. The solution helps extend battery life and improve overall system efficiency in narrowband wireless communication environments.
30. The non-transitory computer-readable storage medium of claim 25 , wherein the link quality measurements comprises a block error rate (BLER) for a maximum number of repetition cycles (Rmax) divided by a whole number into which Rmax can be evenly divided.
This invention relates to wireless communication systems, specifically improving link quality assessment in scenarios with repeated transmissions. The problem addressed is accurately measuring link quality when transmissions are repeated multiple times to enhance reliability, particularly in low-power or high-interference environments. Traditional methods may not account for the impact of repetition cycles on error rates, leading to suboptimal performance. The invention provides a method for evaluating link quality by calculating a block error rate (BLER) over a subset of repetition cycles. The maximum number of repetition cycles (Rmax) is divided into equal parts, and the BLER is determined for each segment. This segmented approach allows for more precise link quality assessment, as it accounts for variations in error rates across different repetition intervals. The method can be implemented in a non-transitory computer-readable storage medium, such as firmware or software, to process received signals and compute the BLER for each segment. This enables adaptive adjustments in transmission parameters, such as modulation, coding, or repetition count, based on the observed error rates in different segments of the repetition cycles. The invention is particularly useful in wireless communication protocols where repeated transmissions are used to improve reliability, such as in IoT devices or machine-type communications.
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March 27, 2020
February 8, 2022
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